Many of my readers have started proofreading from their iPads, scanning legal documents for court reporters as a result of the Proofread Anywhere eCourse I recommend. You can read some of their testimonials in the comments on this post. They offer a 7-day intro course free so you can decide if that line of work is right for you before you pursue the training.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.